Pessanha, Sofia; Manso, Marta; Antunes, Vanessa; Carvalho, Maria Luisa; Antunes Vanessa Gancient on silver: non-invasive determination of thickness gancient over silver in the portuguese monstrance from the 19th century, 15 Rio Symposium on Atomic Spectrometry, 6-11 october, Argentinahttps://www.dropbox.com/s/i71lzvwz3lgo7ys/PROGRAMA%20CIENTIFICO%202019%20CC%20%283%29.pdf?dl=0